Biogas systems use anaerobic digestion to recycle biomass waste into biogas, which can produce heat and electricity and can also be upgraded into Biomethane (also called renewable natural gas). This can be injected into natural gas pipelines or used as renewable fuel. The energy generated may also be used to produce green hydrogen. Digestate – the material remaining after the digestion process – can be used as natural fertiliser, reducing the need for chemical fertilisers. Two key feedstocks for biogas are crop residues and animal manure, so in addition to recycling waste into energy, this process captures methane that could otherwise escape to the atmosphere as the residues and manure decompose.
These systems turn the cost of waste management into a revenue opportunity, converting waste into a renewable source of energy, reducing CO2 and methane emissions and improving environmental quality. This also provides an opportunity to recycle nutrients in the food supply, reducing the need for both petrochemical and mined fertilisers.
- Waste to Clean Energy
- Reduced Greenhouse Gases
- Produces Organic Fertiliser